/Engine/Source/Runtime/RenderCore/Public/Shader.h
void SaveShaderStableKeys ( const [FShaderMapPointerTable](API\Runtime\RenderCore\FShaderMapPointerTable) & InPtrTable, EShaderPlatform TargetShaderPlatform, int32 PermutationId, const struct [FStableShaderKeyAndValue](API\Runtime\RenderCore\FStableShaderKeyAndValue) & SaveKeyVal )